I saw cheaper than dirt has inserts to convert 7.62x54r to 7.62x25mm. Has anyone used one? Sounds like a neat idea for some really cheap and quiet shooting.
I recently bought one from The Sportsmans Guide. I think it was about $14.95. I've only used it once for about 10 shots to try out an M44 I bought at the last 1500. Accuracy was really bad, but I haven't had the opportunity to try the M44 with 7.62x54r yet so I reserve judgement.
The ammo I have has some splits in the case; something I've been told isn't unusual for Polish ammo in this caliber. It made it very hard to remove the spent shell from the adapter. Before I use it again, I plan to make a tool of some sort to make removal easier.
If the ice ever leaves, I want to take my 91/30 to the range and see if it does any better. I also need to get better 7.62x25. The stuff I got first kinda scares me. Surely they have some better stuff available.
I think it'll be ok if I can lick the accuracy problem. At least it will allow me to shoot my Mosin Nagants at MCFG as they only allow pistol ammo.
I've read on other boards that they're o.k. for what they are. Accuracy isn't that great as you've observed but they are really great for short range practice and for the recoil-shy.
I wonder if accuracy is hurting due to the fact that the 7.62x25 bullet is much shorter than the projectile used in the 7.62x54r. It probably has a longer "jump" to hit the rifling, and the twist is probably not right for the small bullet. Not sure if the 7.62x25 bullet is .311-.313 diameter like the 7.62x54r or not either.